git-archive-all as a GitHub Action

[qmonnet]

I've started to work on a GitHub Action that wraps around git-archive-all, to be able to easily use it in CI workflows.

Here's the link: https://github.com/qmonnet/git-archive-all-action Or on the Marketplace: https://github.com/marketplace/actions/git-archive-all

I'm creating this issue for two reasons:

• Awareness: it feels in order to let git-archive-all's maintainer know :slightly_smiling_face:, and in case users are looking for a GitHub Action, they may find it when searching the project's issues going forwards.
• In case you preferred to merge the action file into this repository (which is fine by me - as long as I can use the Action from CI workflows, I don't mind whether it's in this repo or in the one I created and linked above).

Unless you want to take the action.yml in the current repository, there's no action required here, and you can close this issue.